Simple solution for vendor re-rolls: give vendors decreasing re-roll costs based on day. "Pol costs 6 to reroll days 1-3, so you _can_ fish if you really need to but it's high risk high reward. He costs 4 to re-roll days 3-6, and 3 to re-roll days 6+". Rinse and repeat for most vendors. Job done, player gets the agency, high risk strategies are available, and Tempo give themselves another balance lever - re-roll costs. Want to see more large items? Reduce re-roll costs by one across the board. Want to make large items stronger but harder to acquire? Increase re-roll costs for days 1-3 and 4-6, etc etc.
Simple solution for vendor re-rolls: give vendors decreasing re-roll costs based on day. "Pol costs 6 to reroll days 1-3, so you _can_ fish if you really need to but it's high risk high reward. He costs 4 to re-roll days 3-6, and 3 to re-roll days 6+". Rinse and repeat for most vendors. Job done, player gets the agency, high risk strategies are available, and Tempo give themselves another balance lever - re-roll costs. Want to see more large items? Reduce re-roll costs by one across the board. Want to make large items stronger but harder to acquire? Increase re-roll costs for days 1-3 and 4-6, etc etc.